How to segregate the BPM Approvals on the basis of BU?

Summary: BU based Approvals in BPM

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Please assist below I tried and it is not working, going in error

I can raise the expense reports with the multiple BUs we have however I need to trigger the approvals based on BU with the amount, please suggest how I can select BU attribute, its urgent, thank you!

Version (include the version you are using, if applicable):

R13 24B,

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